Wikipedia having incorrect citations is way older than LLMs. As many other people have pointed out in this thread, if you start pulling strings a lot of what people write starts falling apart.

Its not even unique to Wikipedia. Its really not difficult to find very misleading statements cited through a citation that doesn't even support the claim when you check the original.

This is like saying handing out machine guns is no big change because people have been shooting arrows for a long time. At some point volume becomes the story once it overwhelms the community’s ability to correct errors.